Could be the fuel pump, my wifes expedition would take a few times to start, it end up being the bypass value in the fuel pump was bad, The value is supose to kep fule in the lines and at pressure so when you start it there is fuel. Hers was keeping the valve open and all the fuel woudl go back into the tank, so when you trurned the key you had to let the fule pump push gas from the tank to the engine.

Rachel Get Rid Of That Pile Of Trash While You Still Can. I Have One And I Am Disappointed Day After Day With It. I Have To Buy A New Transmission.! At 83.ooo. Miles Is Beyond Me. I Have Have Two Trucks And Two Mustangs. I Am Finally Waking Up And Getting Away From Ford Completely. Sorry If I Got Carrried Away.